Fountain-pen.



M. E. HIEILBRUN.

FOUNTAIN PEN.

APPLICATION FILED FE B. 23. I917.

Patented June 26, 1917.

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' MONROE E. HEILBRUN, OF NEW YORK, N. L, ASSIGNOR TO GEM FOUNTAIN PENCORPORATION, A CORPORATION OF NEW YORK.

FOUNTAIN-PEN.

re ress.

Specification of Letters Patent.

Patented June as, 1917.

To all whom it may concern:

Be it known that I, MONROE E. HnInBRUN, a citizen of the United States,residing at the city, county, and State of Ne York,

have invented certain new and useful Improvements in Fountain-Pens, ofwhich the following is a specification.

My invention relates to fountain pens of the so-called self-fillingtype. Such pens are generally provided with a collapsible ink sack and alever actuated presser-bar for compressing the sack.

This invention is concerned particularly with improvements in theconstruction of the compression device.

The principal objects of my improvement are to provide a compressiondevice of inexpensive construction which is simple and effective inaction; and to provide a construction made entirely of a single piece ofmaterial having a rigid and a spring portion. between which the sacklies and by which it maybe compressed when desired.

v metal or other suitable material.

I attain the objects specified, as well as others not specificallystated, by means of the construction and arrangement of partshereinafter described and particularly pointed out in the claims.

In the accompanying drawings illustrating a preferred embodiment of theimprovement, Figure 1 a vertical section, on an enlarged scale, of afountain pen showing the sack compressed, Fig. 2 is a. fragmentarysection of the barrel showing the parts in normal position, and Fig. 3is a perspective view of the compression device.

Referring to the drawings 1 designates a tubular barrel, 2 a pensection, 3 a resilient and collapsible ink sack fitted on the pensection and a a lever pivoted in a longitudinal slot 5 in the wall ofthe barrel. The parts specified are all old in the art and may be of anyordinary or approved construction.

The compression device to which this invention particularly relates ispreferably made of a single piece or strip of spring The strip is formedwith a collar 6 of a size to fit tightly into the bore of the barrel, anarm 7 extending rigidly under the sack, an arm 8 extending above thesack and constituting the presser-bar of the device, and a connectingportion 9 bent in 'U-shape to form a spring for the presserbar 8, and

preferably reduced in width to increase the resiliency. The arms 7 and Sare preferably eurved in cross section to conform to the curvature ofthe inner surface of the barrel.

In assembling the pen, the bar is inserted into the barrel with thepresser-bar 8 in alinement with the slot 5, the free end of said armextending forwardly a substantial distance beyond its point of contactwith the foot of the lever a; the collar 6 serving to maintain or anchorthe bar in proper position in the'barrel. It is apparent that when thelever is moved to an upright position, as shown in Fig. 1, the sack willbe firmly compressed or squeezed between the lower, rigid, arm 7 and theupper, spring, arm or presser bar 8 of the device. Now, as the lever isreturned to its initial position, the presser-bar 8 will spring upwardand the resilient sack will expand thereby drawing in a charge of ink.

According to my invention, whereby the sack is squeezed or compressed ina positive manner between two arms of the device, I am enabled to obtaina more effective compression of the sack and thereby to obtain a greatersuction and a more complete filling of the pen than heretofore.

Recesses or depressions 10 and 11, having a hump or'ridge between themare formed in the presser-bar 8 to guide and limit the movement of thelever. As the lever is being raised its feet rides in and is guided bythe recess 10 and then over the hump into the recess 11, which acts as astop and indicates the position of maximum depression of the presser-bar8. lVhen on the return movement, the. lever is disengaged from therecess 11, the spring action of the presserbar will drive the lever backto its initial position. made in the device as hereinabove describedwithout departing from the scope of the invention as defined in theclaims.

Vihat I claim as my invention and desire to secure by Letters Patentis: 1. In a self filling fountain pen the combination with a barrelhaving longitudinal slot, a lever ni voted in the slot, a pen s rtion,and a collapsible ink sack, of a compression device formed of a strip ofspring metal bent intermediate its ends and provided with anchoringmeans, one arm of the device lying under the sack. and the other Variousmodifications may be above the sack and in line with the slot, the freeend of the upper arm extending for \vardly a substantial distance beyondthe point of contact with the lever, whereby, upon moving the lever toupright position, said upper arm will be depressed to compress the sackbetween it and the lower arm.

2. In a self-filling fountain pen the combination with a barrel having alongitudinal slot, a lever pivoted in the slot, a pen section, and acollapsible ink sack fitted to the pen section, of a compression devicemade of a single piece of material having a collarv which fits tightlyinto the barrel, an arm extending from the collar and lying under thesack, an arm extending. above the sack in line with the slot, said upperarm having recesses for guiding and limiting the movement of the lever,and a bent connecting portion forming a spring support for the upperarm.

MONROE 'E HErLBRUN.

